Main Scan Skew Adjustment - Ricoh G190 Service Manual

Laser Exposure

Main Scan Skew Adjustment

You can adjust the mirror adjustment cam for magenta [C], cyan [B], and yellow [A] with a
screwdriver. This mechanism corrects the main scan skew. The diagram shows the effect
on line skew [D] when you turn the cam in a counterclockwise direction.
For more about this adjustment, ( LD unit).
LDU Shutter
The LD unit has a shutter. As a result, toner and other dust does not fall on the LDU glass.
The shutter motor [A] moves the shutter [B] in the direction of the arrow with the gear [C].
SC270 occurs if the output of the LDU shutter sensor [D] does not change 1 second after
the LDU shutter motor turned on.
G190 6-34 SM